I'm having trouble saving my project to an external drive. An error prompt forces me to set my scratch to my desktop documents folder which means the media is not in the same place. An error says I to do have write acces to the directory.

Premiere Pro always requires access to scratch disk files. Scratch disk files are preserved for each project, even when you close the project. They are reused when you reopen the project associated with them. If scratch disk files are stored on removable media and the media are removed from the drive, the scratch disk is not available to Premiere Pro.